7861135025 has 12 divisors (see below), whose sum is σ = 9798849024. Its totient is φ = 6255978000.

The previous prime is 7861135003. The next prime is 7861135049. The reversal of 7861135025 is 5205311687.

It is not a de Polignac number, because 7861135025 - 2⁸ = 7861134769 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7861135025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 818381 + ... + 827930.

It is an arithmetic number, because the mean of its divisors is an integer number (816570752).

Almost surely, 2^7861135025 is an apocalyptic number.

It is an amenable number.

7861135025 is a deficient number, since it is larger than the sum of its proper divisors (1937713999).

7861135025 is a wasteful number, since it uses less digits than its factorization.

7861135025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646512 (or 1646507 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 7861135025 is about 88663.0420468416. The cubic root of 7861135025 is about 1988.3603089607.

The spelling of 7861135025 in words is "seven billion, eight hundred sixty-one million, one hundred thirty-five thousand, twenty-five".