25112522001 has 24 divisors (see below), whose sum is σ = 39167673120. Its totient is φ = 14269829952.

The previous prime is 25112521997. The next prime is 25112522027. The reversal of 25112522001 is 10022521152.

It is not a de Polignac number, because 25112522001 - 2² = 25112521997 is a prime.

It is a super-2 number, since 2×25112522001² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25112522801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 450876 + ... + 503501.

It is an arithmetic number, because the mean of its divisors is an integer number (1631986380).

Almost surely, 2^25112522001 is an apocalyptic number.

25112522001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25112522001 is a deficient number, since it is larger than the sum of its proper divisors (14055151119).

25112522001 is a wasteful number, since it uses less digits than its factorization.

25112522001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954573 (or 954566 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The spelling of 25112522001 in words is "twenty-five billion, one hundred twelve million, five hundred twenty-two thousand, one".