76989425 has 24 divisors (see below), whose sum is σ = 101481600. Its totient is φ = 57775680.

The previous prime is 76989421. The next prime is 76989427. The reversal of 76989425 is 52498967.

It is a happy number.

It is not a de Polignac number, because 76989425 - 2² = 76989421 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

Its product of digits (1088640) is a multiple of the sum of its prime divisors (1620).

It is not an unprimeable number, because it can be changed into a prime (76989421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51032 + ... + 52518.

It is an arithmetic number, because the mean of its divisors is an integer number (4228400).

Almost surely, 2^76989425 is an apocalyptic number.

It is an amenable number.

76989425 is a deficient number, since it is larger than the sum of its proper divisors (24492175).

76989425 is a wasteful number, since it uses less digits than its factorization.

76989425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1620 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 76989425 is about 8774.3618001539. The cubic root of 76989425 is about 425.4126096704.

The spelling of 76989425 in words is "seventy-six million, nine hundred eighty-nine thousand, four hundred twenty-five".