625541 has 4 divisors (see below), whose sum is σ = 714912. Its totient is φ = 536172.

The previous prime is 625529. The next prime is 625543. The reversal of 625541 is 145526.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145526 = 2 ⋅72763.

It is not a de Polignac number, because 625541 - 2⁶ = 625477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625543) 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, 44675 + ... + 44688.

It is an arithmetic number, because the mean of its divisors is an integer number (178728).

2⁶²⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

625541 is a deficient number, since it is larger than the sum of its proper divisors (89371).

625541 is an equidigital number, since it uses as much as digits as its factorization.

625541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89370.

The product of its digits is 1200, while the sum is 23.

The square root of 625541 is about 790.9114994739. The cubic root of 625541 is about 85.5234594723.

The spelling of 625541 in words is "six hundred twenty-five thousand, five hundred forty-one".