25000000000040 has 64 divisors (see below), whose sum is σ = 61603650662400. Its totient is φ = 9074315503872.

The previous prime is 25000000000013. The next prime is 25000000000097. The reversal of 25000000000040 is 4000000000052.

It is a sliding number, since 25000000000040 = 40 + 25000000000000 and 1/40 + 1/25000000000000 = 0.025000000000040.

It is a junction number, because it is equal to n+sod(n) for n = 24999999999940 and 25000000000030.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407400872 + ... + 407462231.

It is an arithmetic number, because the mean of its divisors is an integer number (962557041600).

Almost surely, 2^{25000000000040} is an apocalyptic number.

25000000000040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25000000000040 is an abundant number, since it is smaller than the sum of its proper divisors (36603650662360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25000000000040 is a wasteful number, since it uses less digits than its factorization.

25000000000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814863186 (or 814863182 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

Subtracting from 25000000000040 its product of nonzero digits (40), we obtain a square (25000000000000 = 5000000²).

Adding to 25000000000040 its reverse (4000000000052), we get a palindrome (29000000000092).

It can be divided in two parts, 250000000000 and 40, that multiplied together give a 13-th power (10000000000000 = 10¹³).

The spelling of 25000000000040 in words is "twenty-five trillion, forty", and thus it is an aban number and an uban number.