25145461 has 4 divisors (see below), whose sum is σ = 27431424. Its totient is φ = 22859500.

The previous prime is 25145453. The next prime is 25145467. The reversal of 25145461 is 16454152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25145461 - 2³ = 25145453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25145467) 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, 1142965 + ... + 1142986.

It is an arithmetic number, because the mean of its divisors is an integer number (6857856).

Almost surely, 2^25145461 is an apocalyptic number.

It is an amenable number.

25145461 is a deficient number, since it is larger than the sum of its proper divisors (2285963).

25145461 is a wasteful number, since it uses less digits than its factorization.

25145461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285962.

The product of its digits is 4800, while the sum is 28.

The square root of 25145461 is about 5014.5250024304. The cubic root of 25145461 is about 292.9677848618.

The spelling of 25145461 in words is "twenty-five million, one hundred forty-five thousand, four hundred sixty-one".