77473025 has 12 divisors (see below), whose sum is σ = 109790592. Its totient is φ = 53124240.

The previous prime is 77473021. The next prime is 77473031. The reversal of 77473025 is 52037477.

It is not a de Polignac number, because 77473025 - 2² = 77473021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77473021) 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, 221177 + ... + 221526.

It is an arithmetic number, because the mean of its divisors is an integer number (9149216).

Almost surely, 2^77473025 is an apocalyptic number.

It is an amenable number.

77473025 is a deficient number, since it is larger than the sum of its proper divisors (32317567).

77473025 is a wasteful number, since it uses less digits than its factorization.

77473025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442720 (or 442715 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 77473025 is about 8801.8762204430. The cubic root of 77473025 is about 426.3014775449.

The spelling of 77473025 in words is "seventy-seven million, four hundred seventy-three thousand, twenty-five".