25551411240 has 32 divisors (see below), whose sum is σ = 76654234080. Its totient is φ = 6813709632.

The previous prime is 25551411181. The next prime is 25551411251. The reversal of 25551411240 is 4211415552.

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 = 25551411198 and 25551411207.

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 7 ways as a sum of consecutive naturals, for example, 106464094 + ... + 106464333.

It is an arithmetic number, because the mean of its divisors is an integer number (2395444815).

Almost surely, 2^25551411240 is an apocalyptic number.

25551411240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25551411240 is an abundant number, since it is smaller than the sum of its proper divisors (51102822840).

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

25551411240 is a wasteful number, since it uses less digits than its factorization.

25551411240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212928441 (or 212928437 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 25551411240 its reverse (4211415552), we get a palindrome (29762826792).

The spelling of 25551411240 in words is "twenty-five billion, five hundred fifty-one million, four hundred eleven thousand, two hundred forty".