25049859 has 4 divisors (see below), whose sum is σ = 33399816. Its totient is φ = 16699904.

The previous prime is 25049839. The next prime is 25049863. The reversal of 25049859 is 95894052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25049859 - 2⁸ = 25049603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25049859.

It is not an unprimeable number, because it can be changed into a prime (25049839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4174974 + ... + 4174979.

It is an arithmetic number, because the mean of its divisors is an integer number (8349954).

Almost surely, 2^25049859 is an apocalyptic number.

25049859 is a deficient number, since it is larger than the sum of its proper divisors (8349957).

25049859 is an equidigital number, since it uses as much as digits as its factorization.

25049859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349956.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 25049859 is about 5004.9834165559. The cubic root of 25049859 is about 292.5960295404.

The spelling of 25049859 in words is "twenty-five million, forty-nine thousand, eight hundred fifty-nine".