625081461 has 4 divisors (see below), whose sum is σ = 833441952. Its totient is φ = 416720972.

The previous prime is 625081451. The next prime is 625081477. The reversal of 625081461 is 164180526.

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 625081461 - 2⁶ = 625081397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625081451) 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, 104180241 + ... + 104180246.

It is an arithmetic number, because the mean of its divisors is an integer number (208360488).

Almost surely, 2^625081461 is an apocalyptic number.

It is an amenable number.

625081461 is a deficient number, since it is larger than the sum of its proper divisors (208360491).

625081461 is a wasteful number, since it uses less digits than its factorization.

625081461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208360490.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 625081461 is about 25001.6291669163. The cubic root of 625081461 is about 855.0251174181.

The spelling of 625081461 in words is "six hundred twenty-five million, eighty-one thousand, four hundred sixty-one".