25025252142 has 64 divisors (see below), whose sum is σ = 56913571584. Its totient is φ = 7268279040.

The previous prime is 25025252117. The next prime is 25025252149. The reversal of 25025252142 is 24125252052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25025252149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87138 + ... + 240090.

It is an arithmetic number, because the mean of its divisors is an integer number (889274556).

Almost surely, 2^25025252142 is an apocalyptic number.

25025252142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25025252142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28456785792).

25025252142 is an abundant number, since it is smaller than the sum of its proper divisors (31888319442).

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

25025252142 is a wasteful number, since it uses less digits than its factorization.

25025252142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153073.

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 25025252142 in words is "twenty-five billion, twenty-five million, two hundred fifty-two thousand, one hundred forty-two".