25315254501042 has 16 divisors (see below), whose sum is σ = 55233282547872. Its totient is φ = 7671289242720.

The previous prime is 25315254501037. The next prime is 25315254501059. The reversal of 25315254501042 is 24010545251352.

It is a super-2 number, since 2×25315254501042² (a number of 28 digits) contains 22 as substring.

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, 191782231003 + ... + 191782231134.

It is an arithmetic number, because the mean of its divisors is an integer number (3452080159242).

Almost surely, 2^{25315254501042} is an apocalyptic number.

25315254501042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25315254501042 is an abundant number, since it is smaller than the sum of its proper divisors (29918028046830).

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

25315254501042 is a wasteful number, since it uses less digits than its factorization.

25315254501042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383564462153.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 25315254501042 its reverse (24010545251352), we get a palindrome (49325799752394).

The spelling of 25315254501042 in words is "twenty-five trillion, three hundred fifteen billion, two hundred fifty-four million, five hundred one thousand, forty-two".