25620543 has 40 divisors (see below), whose sum is σ = 42688800. Its totient is φ = 15204672.

The previous prime is 25620533. The next prime is 25620577. The reversal of 25620543 is 34502652.

It is not a de Polignac number, because 25620543 - 2¹³ = 25612351 is a prime.

It is a super-2 number, since 2×25620543² = 1312824447229698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620533) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30118 + ... + 30956.

It is an arithmetic number, because the mean of its divisors is an integer number (1067220).

Almost surely, 2^25620543 is an apocalyptic number.

25620543 is a deficient number, since it is larger than the sum of its proper divisors (17068257).

25620543 is a wasteful number, since it uses less digits than its factorization.

25620543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 25620543 is about 5061.6739326037. The cubic root of 25620543 is about 294.8013332500.

The spelling of 25620543 in words is "twenty-five million, six hundred twenty thousand, five hundred forty-three".