77500425 has 12 divisors (see below), whose sum is σ = 128134160. Its totient is φ = 41333520.

The previous prime is 77500361. The next prime is 77500427. The reversal of 77500425 is 52400577.

It is not a de Polignac number, because 77500425 - 2⁶ = 77500361 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77500392 and 77500401.

It is not an unprimeable number, because it can be changed into a prime (77500427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516595 + ... + 516744.

Almost surely, 2^77500425 is an apocalyptic number.

77500425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77500425 is a deficient number, since it is larger than the sum of its proper divisors (50633735).

77500425 is a wasteful number, since it uses less digits than its factorization.

77500425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033352 (or 1033347 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 77500425 is about 8803.4325691744. The cubic root of 77500425 is about 426.3517285139.

The spelling of 77500425 in words is "seventy-seven million, five hundred thousand, four hundred twenty-five".