76997925 has 48 divisors (see below), whose sum is σ = 145318080. Its totient is φ = 39942720.

The previous prime is 76997911. The next prime is 76997933. The reversal of 76997925 is 52979967.

It is a de Polignac number, because none of the positive numbers 2^k-76997925 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23434 + ... + 26516.

It is an arithmetic number, because the mean of its divisors is an integer number (3027460).

Almost surely, 2^76997925 is an apocalyptic number.

76997925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

76997925 is the 5550-th heptagonal number.

It is an amenable number.

76997925 is a deficient number, since it is larger than the sum of its proper divisors (68320155).

76997925 is a wasteful number, since it uses less digits than its factorization.

76997925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3128 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 76997925 is about 8774.8461524975. The cubic root of 76997925 is about 425.4282649552.

It can be divided in two parts, 76 and 997925, that added together give a square (998001 = 999²).

The spelling of 76997925 in words is "seventy-six million, nine hundred ninety-seven thousand, nine hundred twenty-five".