75120425 has 12 divisors (see below), whose sum is σ = 93637980. Its totient is φ = 59781120.

The previous prime is 75120407. The next prime is 75120439. The reversal of 75120425 is 52402157.

It can be written as a sum of positive squares in 6 ways, for example, as 8404201 + 66716224 = 2899^2 + 8168^2 .

It is not a de Polignac number, because 75120425 - 2⁸ = 75120169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75120394 and 75120403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2960 + ... + 12609.

It is an arithmetic number, because the mean of its divisors is an integer number (7803165).

Almost surely, 2^75120425 is an apocalyptic number.

It is an amenable number.

75120425 is a deficient number, since it is larger than the sum of its proper divisors (18517555).

75120425 is a wasteful number, since it uses less digits than its factorization.

75120425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15772 (or 15767 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 75120425 is about 8667.2039897536. The cubic root of 75120425 is about 421.9419239052.

The spelling of 75120425 in words is "seventy-five million, one hundred twenty thousand, four hundred twenty-five".