25144121044 has 24 divisors (see below), whose sum is σ = 50294182400. Its totient is φ = 10774778976.

The previous prime is 25144121021. The next prime is 25144121047. The reversal of 25144121044 is 44012144152.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25144121047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211357 + ... + 308155.

Almost surely, 2^25144121044 is an apocalyptic number.

It is an amenable number.

25144121044 is an abundant number, since it is smaller than the sum of its proper divisors (25150061356).

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

25144121044 is a wasteful number, since it uses less digits than its factorization.

25144121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106087 (or 106085 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 25144121044 its reverse (44012144152), we get a palindrome (69156265196).

It can be divided in two parts, 2514412 and 1044, that added together give a cube (2515456 = 136³).

The spelling of 25144121044 in words is "twenty-five billion, one hundred forty-four million, one hundred twenty-one thousand, forty-four".