25512501052 has 24 divisors (see below), whose sum is σ = 47278229040. Its totient is φ = 12004596480.

The previous prime is 25512501031. The next prime is 25512501061. The reversal of 25512501052 is 25010521552.

It is a super-2 number, since 2×25512501052² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25512501052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988974 + ... + 1014442.

It is an arithmetic number, because the mean of its divisors is an integer number (1969926210).

Almost surely, 2^25512501052 is an apocalyptic number.

It is an amenable number.

25512501052 is a deficient number, since it is larger than the sum of its proper divisors (21765727988).

25512501052 is a wasteful number, since it uses less digits than its factorization.

25512501052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40221 (or 40219 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 25512501052 in words is "twenty-five billion, five hundred twelve million, five hundred one thousand, fifty-two".