7491265253 has 4 divisors (see below), whose sum is σ = 7665480768. Its totient is φ = 7317049740.

The previous prime is 7491265217. The next prime is 7491265291. The reversal of 7491265253 is 3525621947.

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 7491265253 - 2⁶ = 7491265189 is a prime.

It is a super-2 number, since 2×7491265253² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7491265153) 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, 87107693 + ... + 87107778.

It is an arithmetic number, because the mean of its divisors is an integer number (1916370192).

Almost surely, 2^7491265253 is an apocalyptic number.

It is an amenable number.

7491265253 is a deficient number, since it is larger than the sum of its proper divisors (174215515).

7491265253 is a wasteful number, since it uses less digits than its factorization.

7491265253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174215514.

The product of its digits is 453600, while the sum is 44.

The square root of 7491265253 is about 86552.0956014353. The cubic root of 7491265253 is about 1956.6736280955.

The spelling of 7491265253 in words is "seven billion, four hundred ninety-one million, two hundred sixty-five thousand, two hundred fifty-three".