25113711540 has 24 divisors (see below), whose sum is σ = 70318392480. Its totient is φ = 6696989728.

The previous prime is 25113711527. The next prime is 25113711541. The reversal of 25113711540 is 4511731152.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25113711498 and 25113711507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25113711541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 209280870 + ... + 209280989.

It is an arithmetic number, because the mean of its divisors is an integer number (2929933020).

Almost surely, 2^25113711540 is an apocalyptic number.

25113711540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25113711540 is an abundant number, since it is smaller than the sum of its proper divisors (45204680940).

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

25113711540 is a wasteful number, since it uses less digits than its factorization.

25113711540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418561871 (or 418561869 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 25113711540 in words is "twenty-five billion, one hundred thirteen million, seven hundred eleven thousand, five hundred forty".