23020725 has 48 divisors (see below), whose sum is σ = 46858112. Its totient is φ = 9711360.

The previous prime is 23020687. The next prime is 23020727. The reversal of 23020725 is 52702032.

It is not a de Polignac number, because 23020725 - 2⁶ = 23020661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5139 + ... + 8511.

Almost surely, 2^23020725 is an apocalyptic number.

23020725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23020725 is an abundant number, since it is smaller than the sum of its proper divisors (23837387).

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

23020725 is a wasteful number, since it uses less digits than its factorization.

23020725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406 (or 3401 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 23020725 is about 4797.9917673960. The cubic root of 23020725 is about 284.4720913894.

Adding to 23020725 its reverse (52702032), we get a palindrome (75722757).

The spelling of 23020725 in words is "twenty-three million, twenty thousand, seven hundred twenty-five".