25732956690 has 128 divisors (see below), whose sum is σ = 80337277440. Its totient is φ = 5738342400.

The previous prime is 25732956677. The next prime is 25732956713. The reversal of 25732956690 is 9665923752.

25732956690 is a `hidden beast` number, since 2 + 5 + 73 + 2 + 9 + 566 + 9 + 0 = 666.

It is a super-2 number, since 2×25732956690² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

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 63 ways as a sum of consecutive naturals, for example, 88551 + ... + 243530.

It is an arithmetic number, because the mean of its divisors is an integer number (627634980).

Almost surely, 2^25732956690 is an apocalyptic number.

25732956690 is an abundant number, since it is smaller than the sum of its proper divisors (54604320750).

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

25732956690 is a wasteful number, since it uses less digits than its factorization.

25732956690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332145 (or 332139 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 54.

The spelling of 25732956690 in words is "twenty-five billion, seven hundred thirty-two million, nine hundred fifty-six thousand, six hundred ninety".