25542020 has 24 divisors (see below), whose sum is σ = 61301184. Its totient is φ = 8757216.

The previous prime is 25542001. The next prime is 25542031. The reversal of 25542020 is 2024552.

25542020 = T₁₁₇ + T₁₁₈ + ... + T₅₃₆.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 25541983 and 25542001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91082 + ... + 91361.

It is an arithmetic number, because the mean of its divisors is an integer number (2554216).

Almost surely, 2^25542020 is an apocalyptic number.

25542020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25542020 is an abundant number, since it is smaller than the sum of its proper divisors (35759164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25542020 is a wasteful number, since it uses less digits than its factorization.

25542020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182459 (or 182457 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 25542020 is about 5053.9113565633. The cubic root of 25542020 is about 294.4998515511.

Adding to 25542020 its reverse (2024552), we get a palindrome (27566572).

The spelling of 25542020 in words is "twenty-five million, five hundred forty-two thousand, twenty".