25606267500 has 120 divisors (see below), whose sum is σ = 81448678080. Its totient is φ = 6207560000.

The previous prime is 25606267439. The next prime is 25606267507. The reversal of 25606267500 is 576260652.

It is not an unprimeable number, because it can be changed into a prime (25606267507) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 72690 + ... + 237689.

It is an arithmetic number, because the mean of its divisors is an integer number (678738984).

Almost surely, 2^25606267500 is an apocalyptic number.

25606267500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25606267500 is an abundant number, since it is smaller than the sum of its proper divisors (55842410580).

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

25606267500 is a wasteful number, since it uses less digits than its factorization.

25606267500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310417 (or 310400 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 25606267500 in words is "twenty-five billion, six hundred six million, two hundred sixty-seven thousand, five hundred".