25285195916 has 12 divisors (see below), whose sum is σ = 45278141832. Its totient is φ = 12348583968.

The previous prime is 25285195883. The next prime is 25285195933. The reversal of 25285195916 is 61959158252.

It is a super-2 number, since 2×25285195916² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73503305 + ... + 73503648.

It is an arithmetic number, because the mean of its divisors is an integer number (3773178486).

Almost surely, 2^25285195916 is an apocalyptic number.

It is an amenable number.

25285195916 is a deficient number, since it is larger than the sum of its proper divisors (19992945916).

25285195916 is a wasteful number, since it uses less digits than its factorization.

25285195916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147007000 (or 147006998 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 53.

The spelling of 25285195916 in words is "twenty-five billion, two hundred eighty-five million, one hundred ninety-five thousand, nine hundred sixteen".