25112252144 has 40 divisors (see below), whose sum is σ = 55738515840. Its totient is φ = 10736687808.

The previous prime is 25112252131. The next prime is 25112252147. The reversal of 25112252144 is 44125221152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112252147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220634 + ... + 314489.

It is an arithmetic number, because the mean of its divisors is an integer number (1393462896).

Almost surely, 2^25112252144 is an apocalyptic number.

It is an amenable number.

25112252144 is an abundant number, since it is smaller than the sum of its proper divisors (30626263696).

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

25112252144 is a wasteful number, since it uses less digits than its factorization.

25112252144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535557 (or 535551 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

Adding to 25112252144 its reverse (44125221152), we get a palindrome (69237473296).

The spelling of 25112252144 in words is "twenty-five billion, one hundred twelve million, two hundred fifty-two thousand, one hundred forty-four".