25969657532 has 96 divisors (see below), whose sum is σ = 58783667712. Its totient is φ = 9763358976.

The previous prime is 25969657531. The next prime is 25969657541. The reversal of 25969657532 is 23575696952.

It is a super-2 number, since 2×25969657532² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25969657531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 556703 + ... + 601545.

It is an arithmetic number, because the mean of its divisors is an integer number (612329872).

Almost surely, 2^25969657532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25969657532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29391833856).

25969657532 is an abundant number, since it is smaller than the sum of its proper divisors (32814010180).

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

25969657532 is a wasteful number, since it uses less digits than its factorization.

25969657532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44947 (or 44945 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 59.

The spelling of 25969657532 in words is "twenty-five billion, nine hundred sixty-nine million, six hundred fifty-seven thousand, five hundred thirty-two".