25346261 has 4 divisors (see below), whose sum is σ = 26220300. Its totient is φ = 24472224.

The previous prime is 25346213. The next prime is 25346263. The reversal of 25346261 is 16264352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15952036 + 9394225 = 3994^2 + 3065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25346261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 874009 = 25346261 / (2 + 5 + 3 + 4 + 6 + 2 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25346263) 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, 436976 + ... + 437033.

It is an arithmetic number, because the mean of its divisors is an integer number (6555075).

Almost surely, 2^25346261 is an apocalyptic number.

25346261 is the 2252-nd centered decagonal number.

It is an amenable number.

25346261 is a deficient number, since it is larger than the sum of its proper divisors (874039).

25346261 is an equidigital number, since it uses as much as digits as its factorization.

25346261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874038.

The product of its digits is 8640, while the sum is 29.

The square root of 25346261 is about 5034.5070265121. The cubic root of 25346261 is about 293.7455532147.

The spelling of 25346261 in words is "twenty-five million, three hundred forty-six thousand, two hundred sixty-one".