25142740 has 24 divisors (see below), whose sum is σ = 60342912. Its totient is φ = 8620320.

The previous prime is 25142731. The next prime is 25142771. The reversal of 25142740 is 4724152.

It is a congruent number.

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, 89656 + ... + 89935.

It is an arithmetic number, because the mean of its divisors is an integer number (2514288).

Almost surely, 2^25142740 is an apocalyptic number.

25142740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25142740 is an abundant number, since it is smaller than the sum of its proper divisors (35200172).

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

25142740 is a wasteful number, since it uses less digits than its factorization.

25142740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179607 (or 179605 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 25142740 is about 5014.2536832514. The cubic root of 25142740 is about 292.9572170950.

Adding to 25142740 its reverse (4724152), we get a palindrome (29866892).

The spelling of 25142740 in words is "twenty-five million, one hundred forty-two thousand, seven hundred forty".