25540221023040 has 56 divisors (see below), whose sum is σ = 81090201751200. Its totient is φ = 6810725605888.

The previous prime is 25540221022999. The next prime is 25540221023069. The reversal of 25540221023040 is 4032012204552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25540221022989 and 25540221023007.

It is a congruent number.

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, 13302197490 + ... + 13302199409.

Almost surely, 2^{25540221023040} is an apocalyptic number.

25540221023040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25540221023040 is an abundant number, since it is smaller than the sum of its proper divisors (55549980728160).

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

25540221023040 is a wasteful number, since it uses less digits than its factorization.

25540221023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26604396919 (or 26604396909 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 25540221023040 its reverse (4032012204552), we get a palindrome (29572233227592).

The spelling of 25540221023040 in words is "twenty-five trillion, five hundred forty billion, two hundred twenty-one million, twenty-three thousand, forty".