25531223123004 has 48 divisors (see below), whose sum is σ = 59740966333440. Its totient is φ = 8486393379520.

The previous prime is 25531223122997. The next prime is 25531223123009. The reversal of 25531223123004 is 40032132213552.

It is a super-2 number, since 2×25531223123004² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25531223123009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139405837 + ... + 139588859.

It is an arithmetic number, because the mean of its divisors is an integer number (1244603465280).

Almost surely, 2^{25531223123004} is an apocalyptic number.

It is an amenable number.

25531223123004 is an abundant number, since it is smaller than the sum of its proper divisors (34209743210436).

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

25531223123004 is a wasteful number, since it uses less digits than its factorization.

25531223123004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215770 (or 215768 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 25531223123004 its reverse (40032132213552), we get a palindrome (65563355336556).

The spelling of 25531223123004 in words is "twenty-five trillion, five hundred thirty-one billion, two hundred twenty-three million, one hundred twenty-three thousand, four".