25020122436540 has 144 divisors (see below), whose sum is σ = 94621553994240. Its totient is φ = 5198986477440.

The previous prime is 25020122436523. The next prime is 25020122436553. The reversal of 25020122436540 is 4563422102052.

25020122436540 is a `hidden beast` number, since 2 + 50 + 2 + 0 + 1 + 22 + 43 + 6 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25020122436495 and 25020122436504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 902587960 + ... + 902615679.

It is an arithmetic number, because the mean of its divisors is an integer number (657094124960).

Almost surely, 2^{25020122436540} is an apocalyptic number.

25020122436540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25020122436540 is an abundant number, since it is smaller than the sum of its proper divisors (69601431557700).

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

25020122436540 is a wasteful number, since it uses less digits than its factorization.

25020122436540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805203672 (or 1805203667 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 25020122436540 its reverse (4563422102052), we get a palindrome (29583544538592).

The spelling of 25020122436540 in words is "twenty-five trillion, twenty billion, one hundred twenty-two million, four hundred thirty-six thousand, five hundred forty".