25122942 has 48 divisors (see below), whose sum is σ = 59256288. Its totient is φ = 7646400.

The previous prime is 25122917. The next prime is 25122943. The reversal of 25122942 is 24922152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25122943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23103 + ... + 24165.

It is an arithmetic number, because the mean of its divisors is an integer number (1234506).

Almost surely, 2^25122942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25122942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29628144).

25122942 is an abundant number, since it is smaller than the sum of its proper divisors (34133346).

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

25122942 is a wasteful number, since it uses less digits than its factorization.

25122942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1182 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 25122942 is about 5012.2791223155. The cubic root of 25122942 is about 292.8803030436.

The spelling of 25122942 in words is "twenty-five million, one hundred twenty-two thousand, nine hundred forty-two".