7525762121 has 4 divisors (see below), whose sum is σ = 7526006544. Its totient is φ = 7525517700.

The previous prime is 7525762103. The next prime is 7525762133. The reversal of 7525762121 is 1212675257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7525762121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7525762021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68015 + ... + 140276.

It is an arithmetic number, because the mean of its divisors is an integer number (1881501636).

Almost surely, 2^7525762121 is an apocalyptic number.

It is an amenable number.

7525762121 is a deficient number, since it is larger than the sum of its proper divisors (244423).

7525762121 is a wasteful number, since it uses less digits than its factorization.

7525762121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244422.

The product of its digits is 58800, while the sum is 38.

The square root of 7525762121 is about 86751.1505456844. The cubic root of 7525762121 is about 1959.6724880538.

The spelling of 7525762121 in words is "seven billion, five hundred twenty-five million, seven hundred sixty-two thousand, one hundred twenty-one".