76218525 has 36 divisors (see below), whose sum is σ = 141235380. Its totient is φ = 39244800.

The previous prime is 76218517. The next prime is 76218547. The reversal of 76218525 is 52581267.

It is a happy number.

76218525 is a `hidden beast` number, since 7 + 621 + 8 + 5 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1205604 + 75012921 = 1098^2 + 8661^2 .

It is not a de Polignac number, because 76218525 - 2³ = 76218517 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 76218525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 685 + ... + 12365.

It is an arithmetic number, because the mean of its divisors is an integer number (3923205).

Almost surely, 2^76218525 is an apocalyptic number.

76218525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

76218525 is a deficient number, since it is larger than the sum of its proper divisors (65016855).

76218525 is a wasteful number, since it uses less digits than its factorization.

76218525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11726 (or 11718 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 76218525 is about 8730.3221590042. The cubic root of 76218525 is about 423.9879494765.

The spelling of 76218525 in words is "seventy-six million, two hundred eighteen thousand, five hundred twenty-five".