2525440121 has 8 divisors (see below), whose sum is σ = 2542700160. Its totient is φ = 2508225328.

The previous prime is 2525440103. The next prime is 2525440133. The reversal of 2525440121 is 1210445252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2525440121 - 2²² = 2521245817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2525442121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104720 + ... + 126558.

It is an arithmetic number, because the mean of its divisors is an integer number (317837520).

Almost surely, 2^2525440121 is an apocalyptic number.

It is an amenable number.

2525440121 is a deficient number, since it is larger than the sum of its proper divisors (17260039).

2525440121 is a wasteful number, since it uses less digits than its factorization.

2525440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22623.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2525440121 is about 50253.7572824162. The cubic root of 2525440121 is about 1361.7969544213.

Adding to 2525440121 its reverse (1210445252), we get a palindrome (3735885373).

The spelling of 2525440121 in words is "two billion, five hundred twenty-five million, four hundred forty thousand, one hundred twenty-one".