2545625897 has 4 divisors (see below), whose sum is σ = 2556840336. Its totient is φ = 2534411460.

The previous prime is 2545625869. The next prime is 2545625911. The reversal of 2545625897 is 7985265452.

It is a happy number.

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 not a de Polignac number, because 2545625897 - 2¹⁶ = 2545560361 is a prime.

It is a super-2 number, since 2×2545625897² = 12960422414954109218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545625807) 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, 5606879 + ... + 5607332.

It is an arithmetic number, because the mean of its divisors is an integer number (639210084).

Almost surely, 2^2545625897 is an apocalyptic number.

It is an amenable number.

2545625897 is a deficient number, since it is larger than the sum of its proper divisors (11214439).

2545625897 is a wasteful number, since it uses less digits than its factorization.

2545625897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11214438.

The product of its digits is 6048000, while the sum is 53.

The square root of 2545625897 is about 50454.1960296664. The cubic root of 2545625897 is about 1365.4155992305.

The spelling of 2545625897 in words is "two billion, five hundred forty-five million, six hundred twenty-five thousand, eight hundred ninety-seven".