75400025 has 12 divisors (see below), whose sum is σ = 95777724. Its totient is φ = 58848000.

The previous prime is 75400019. The next prime is 75400033. The reversal of 75400025 is 52000457.

It can be written as a sum of positive squares in 6 ways, for example, as 28504921 + 46895104 = 5339^2 + 6848^2 .

It is not a de Polignac number, because 75400025 - 2⁴ = 75400009 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 35756 + ... + 37805.

It is an arithmetic number, because the mean of its divisors is an integer number (7981477).

Almost surely, 2^75400025 is an apocalyptic number.

It is an amenable number.

75400025 is a deficient number, since it is larger than the sum of its proper divisors (20377699).

75400025 is a wasteful number, since it uses less digits than its factorization.

75400025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73612 (or 73607 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 75400025 is about 8683.3187779788. The cubic root of 75400025 is about 422.4647683704.

The spelling of 75400025 in words is "seventy-five million, four hundred thousand, twenty-five".