145625739 has 16 divisors (see below), whose sum is σ = 224106240. Its totient is φ = 82389600.

The previous prime is 145625737. The next prime is 145625743. The reversal of 145625739 is 937526541.

It is not a de Polignac number, because 145625739 - 2¹ = 145625737 is a prime.

It is a super-2 number, since 2×145625739² = 42413711718592242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145625739.

It is not an unprimeable number, because it can be changed into a prime (145625731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32209 + ... + 36450.

It is an arithmetic number, because the mean of its divisors is an integer number (14006640).

Almost surely, 2^145625739 is an apocalyptic number.

145625739 is a deficient number, since it is larger than the sum of its proper divisors (78480501).

145625739 is a wasteful number, since it uses less digits than its factorization.

145625739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68770.

The product of its digits is 226800, while the sum is 42.

The square root of 145625739 is about 12067.5490054940. The cubic root of 145625739 is about 526.1134211118.

It can be divided in two parts, 14562 and 5739, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 145625739 in words is "one hundred forty-five million, six hundred twenty-five thousand, seven hundred thirty-nine".