745025137 has 4 divisors (see below), whose sum is σ = 751860340. Its totient is φ = 738189936.

The previous prime is 745025117. The next prime is 745025179. The reversal of 745025137 is 731520547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189998656 + 555026481 = 13784^2 + 23559^2 .

It is a cyclic number.

It is not a de Polignac number, because 745025137 - 2¹¹ = 745023089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745025117) 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, 3417438 + ... + 3417655.

It is an arithmetic number, because the mean of its divisors is an integer number (187965085).

Almost surely, 2^745025137 is an apocalyptic number.

It is an amenable number.

745025137 is a deficient number, since it is larger than the sum of its proper divisors (6835203).

745025137 is a wasteful number, since it uses less digits than its factorization.

745025137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835202.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 745025137 is about 27295.1485982399. The cubic root of 745025137 is about 906.5469658121.

The spelling of 745025137 in words is "seven hundred forty-five million, twenty-five thousand, one hundred thirty-seven".