25090779 has 8 divisors (see below), whose sum is σ = 38233600. Its totient is φ = 14337576.

The previous prime is 25090777. The next prime is 25090781. The reversal of 25090779 is 97709052.

It is an interprime number because it is at equal distance from previous prime (25090777) and next prime (25090781).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25090779 - 2¹ = 25090777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25090777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597379 + ... + 597420.

It is an arithmetic number, because the mean of its divisors is an integer number (4779200).

Almost surely, 2^25090779 is an apocalyptic number.

25090779 is a deficient number, since it is larger than the sum of its proper divisors (13142821).

25090779 is a wasteful number, since it uses less digits than its factorization.

25090779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194809.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 25090779 is about 5009.0696741012. The cubic root of 25090779 is about 292.7552655126.

It can be divided in two parts, 250907 and 79, that added together give a triangular number (250986 = T₇₀₈).

The spelling of 25090779 in words is "twenty-five million, ninety thousand, seven hundred seventy-nine".