427890025 has 6 divisors (see below), whose sum is σ = 530583662. Its totient is φ = 342312000.

The previous prime is 427890019. The next prime is 427890031. The reversal of 427890025 is 520098724.

It is an interprime number because it is at equal distance from previous prime (427890019) and next prime (427890031).

It can be written as a sum of positive squares in 3 ways, for example, as 60171049 + 367718976 = 7757^2 + 19176^2 .

It is not a de Polignac number, because 427890025 - 2²³ = 419501417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8557776 + ... + 8557825.

Almost surely, 2^427890025 is an apocalyptic number.

It is an amenable number.

427890025 is a deficient number, since it is larger than the sum of its proper divisors (102693637).

427890025 is a wasteful number, since it uses less digits than its factorization.

427890025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17115611 (or 17115606 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 427890025 is about 20685.5027736819. The cubic root of 427890025 is about 753.5476516899.

The spelling of 427890025 in words is "four hundred twenty-seven million, eight hundred ninety thousand, twenty-five".