25155425 has 6 divisors (see below), whose sum is σ = 31192758. Its totient is φ = 20124320.

The previous prime is 25155413. The next prime is 25155433. The reversal of 25155425 is 52455152.

It can be written as a sum of positive squares in 3 ways, for example, as 781456 + 24373969 = 884^2 + 4937^2 .

It is not a de Polignac number, because 25155425 - 2²² = 20961121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503084 + ... + 503133.

It is an arithmetic number, because the mean of its divisors is an integer number (5198793).

Almost surely, 2^25155425 is an apocalyptic number.

25155425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25155425 is a deficient number, since it is larger than the sum of its proper divisors (6037333).

25155425 is a wasteful number, since it uses less digits than its factorization.

25155425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006227 (or 1006222 counting only the distinct ones).

The product of its digits is 10000, while the sum is 29.

The square root of 25155425 is about 5015.5184178707. The cubic root of 25155425 is about 293.0064763446.

The spelling of 25155425 in words is "twenty-five million, one hundred fifty-five thousand, four hundred twenty-five".