125000002 has 4 divisors (see below), whose sum is σ = 187500006. Its totient is φ = 62500000.

The previous prime is 124999991. The next prime is 125000003. The reversal of 125000002 is 200000521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200000521 = 7 ⋅28571503.

It can be written as a sum of positive squares in only one way, i.e., 123409881 + 1590121 = 11109^2 + 1261^2 .

It is not an unprimeable number, because it can be changed into a prime (125000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31249999 + ... + 31250002.

Almost surely, 2^125000002 is an apocalyptic number.

125000002 is a deficient number, since it is larger than the sum of its proper divisors (62500004).

125000002 is an equidigital number, since it uses as much as digits as its factorization.

125000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62500003.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 125000002 is about 11180.3399769417. The cubic root of 125000002 is about 500.0000026667. Note that the first 5 decimals are identical.

Adding to 125000002 its reverse (200000521), we get a palindrome (325000523).

It can be divided in two parts, 12500000 and 2, that multiplied together give a square (25000000 = 5000²).

The spelling of 125000002 in words is "one hundred twenty-five million, two", and thus it is an aban number.