25040421142 has 32 divisors (see below), whose sum is σ = 42428344320. Its totient is φ = 10979112480.

The previous prime is 25040421101. The next prime is 25040421179. The reversal of 25040421142 is 24112404052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675453 + ... + 711559.

It is an arithmetic number, because the mean of its divisors is an integer number (1325885760).

Almost surely, 2^25040421142 is an apocalyptic number.

25040421142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25040421142 is a deficient number, since it is larger than the sum of its proper divisors (17387923178).

25040421142 is a wasteful number, since it uses less digits than its factorization.

25040421142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37236.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 25040421142 its reverse (24112404052), we get a palindrome (49152825194).

The spelling of 25040421142 in words is "twenty-five billion, forty million, four hundred twenty-one thousand, one hundred forty-two".