505400025 has 48 divisors (see below), whose sum is σ = 902442240. Its totient is φ = 248102400.

The previous prime is 505400017. The next prime is 505400039. The reversal of 505400025 is 520004505.

It is not a de Polignac number, because 505400025 - 2³ = 505400017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 505399974 and 505400010.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 554320 + ... + 555230.

It is an arithmetic number, because the mean of its divisors is an integer number (18800880).

Almost surely, 2^505400025 is an apocalyptic number.

It is an amenable number.

505400025 is a deficient number, since it is larger than the sum of its proper divisors (397042215).

505400025 is a wasteful number, since it uses less digits than its factorization.

505400025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 505400025 is about 22481.1037318011. The cubic root of 505400025 is about 796.5476359300.

The spelling of 505400025 in words is "five hundred five million, four hundred thousand, twenty-five".